Then one day a student approached him to suggest they build a robot that would balance on a ball.

Dr. Kumagai thought it was a wonderful idea.

The robot they built rides on a rubber-coated bowling ball, which is driven by three omnidirectional wheels. The robot can not only stand still but also move in any direction and pivot around its vertical axis.

Now I know what you're thinking, "but GW, a ball-balancing robot doesn't seem that threatening -- you're just being paranoid". And that's where you're wrong. Just think about it: a robot that can balance itself on a ball is literally inches from your wiener. No thank you!